Multi-gang adjustable electrical box

ABSTRACT

An electrical box assembly includes an electrical box having a removable partition plate that can be positioned between the ends of the electrical box or at the end of the electrical box when two or more of the electrical boxes are ganged together. The electrical box can include a mounting bracket having a body portion attached to a wall of the box for supporting the box during use. A support member is coupled to the mounting bracket and is extendable to a length to contact the opposing wall. The mounting and the support member are independently adjustable with respect to the box.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation application of Ser. No. 13/632,699,filed Oct. 1, 2012, which is hereby incorporated by reference in itsentirety.

FIELD OF THE INVENTION

The present invention is directed to a gangable electrical box having amovable partition and a mounting bracket. The invention is furtherdirected to an electrical box having an adjustable mounting bracket witha movable extension support member.

BACKGROUND OF THE INVENTION

Electrical boxes are required in many situations for supportingelectrical wiring devices such as receptacles, switches and connectors.Many electrical boxes have removable end walls so that two or moreelectrical boxes can be ganged together.

Electrical boxes having supports for electrical boxes are often used formounting the electrical box to a support such as a wall stud. Varioussupport devices are also used that extend from the electrical box tocontact an opposing wall to support one side of the electrical box.

One example of an electrical box is disclosed in U.S. Pat. No. 2,092,367to Breitenstein. The outlet box has a movable partition plate havingnotches that fit in the bottom wall of the electrical box. The top endhas tabs that fit within holes formed in a cover plate. An elongatedtongue extends from the top end to project into the opening in the coverplate.

U.S. Pat. No. 6,872,884 to Roesch et al. discloses a gangable electricalunit. The unit is constructed for positioning an electrical componentbeside an electrical outlet box. The unit includes a bracket with a wallstructure and an adhering element for mounting on a wall of theelectrical outlet box.

U.S. Pat. No. 6,894,222 to Lalancette et al. discloses an outlet boxhaving an outwardly extending flange for mounting the electrical box anda plurality of knock-outs in the side walls. Outwardly extending flangesproject from opposite side walls. Fastening members integrally formedwith the flanges mount the box to a structural member.

U.S. Pat. No. 7,119,277 to Shotey et al. discloses an electrical devicecover having a plurality of knock-outs in the adapter plate where theknock-outs include concentric rings. The knock-outs can be selectivelyremoved to form an opening with different sizes.

U.S. Pat. No. 7,186,915 to Hull et al. discloses an electrical boxmolded as a one-piece unit of plastic material having three connectorsextending outwardly from each side wall for receiving different sizes ofelectrical non-metallic tubing. The internal corners of the box areoccupied by bosses that extend the full height of the corners and haveholes therein for receiving a fastener. Attachment ears extend outwardlyfrom the box. An adapter is attached to a front surface of the box withattachment ears aligned with the box ears.

U.S. Pat. No. 7,575,122 to Hull et al. discloses an outlet box having aknock-out in a side wall of a plastic electrical box. The knock-out hasa slot for receiving a screw driver to apply a knock-out force. Theknock-outs include a plurality of eccentric circles formed in the sidewall.

U.S. Pat. No. 7,628,286 to Lalancette discloses an electrical box havinga box locator adjustably positioned on one of the side walls to adjustthe location of the front face of the box with respect to the stud towhich the box is mounted. An opposite side wall includes a supportbracket that is adjustably attached to the electrical box for supportingthe electrical box with respect to a back wall.

U.S. Patent Publication No. 2010/0288554 to Jafari discloses anadjustable support bracket for an electrical box. The bracket includestwo or three components incorporating a ratchet or locking mechanism toprovide incremental adjustment of the support. The extendable armsinclude a spring loaded tab to engage a notch in the opposing extendablearm.

While the prior electrical boxes have generally been suitable for theirintended use, there is a continuing need in the industry for improvedelectrical boxes.

SUMMARY OF THE INVENTION

The present invention is directed to an electrical box having apartition member for dividing the electrical box into separatecompartments. The invention is also directed to a gangable electricalbox having a divider plate and oversized knockouts to accommodatevarious electrical connections.

The present invention is further directed to a gangable electrical boxhaving an adjustable mounting member for positioning the electrical boxat a selected distance from a support and where the mounting member hasan adjustable support that can extend from the support member.

Accordingly, one object of the invention is to provide a gangableelectrical box where the electrical box has a removable partition platethat can be positioned in various locations. The electrical box can beganged to another box where the partition plate can be inserted at thejuncture between the adjoining boxes after assembly.

A further feature of the invention is to provide a gangable electricalbox that is easily adapted for accommodating various electrical wiringdevices in different installations.

Another feature of the invention is to provide an electrical box withvarious sizes of knockouts to connect to different size conduits andconnectors. The knockouts in the side wall of the electrical box can bedifferent sizes and can vary from one side wall to another. Theknockouts can be as large as two inches. In one embodiment, theknockouts can be formed as concentric rings that can be selectivelyremoved to provide the size opening for the intended connector.

Still another feature of the invention is to provide an electrical boxhaving a removable and adjustable mounting member for mounting theelectrical box to a support such as a wall stud. The support member isattached to the electrical box and is adjustable to position the openend of the electrical box at the wall surface. The position of themounting bracket is selected depending on the thickness of the wall. Themounting bracket typically has a length to extend beyond the rear wallof the box to contact the opposing wall. The electrical box can have amounting bracket on opposite sides of the box where one mounting bracketis positioned to extend between the inner surfaces of the opposing wallsto support one end of the box.

The mounting bracket in one embodiment of the invention has anextendable support member that can be adjusted to contact the surface ofthe opposing wall to support one end of the box.

These and other aspects of the invention are basically attained byproviding an electrical box assembly comprising a gangable electricalbox having a rear wall, opposing side wall, and removable end walls.Each of the opposing side walls has a plurality of inwardly extendingflanges for supporting an electrical device. Each of the flanges arespaced from a respective end wall and are spaced apart a distance toreceive a partition plate. At least one partition plate has a dimensionto fit between adjacent flanges and between a flange and a respectiveend wall. The electrical box is gangable with another electrical box andthe at least one partition plate is adapted to be received between arespective flange of the electrical boxes.

The various features of the invention are further attained by providingan electrical box assembly comprising a gangable electrical box having arear wall, opposing side walls and opposing end walls. The opposing sidewalls have an inwardly extending flange adapted for supporting anelectrical device. A mounting bracket has a body portion coupled to theelectrical box. The mounting bracket has a flange extending outward froma top end of the body portion and a leg extending from a bottom end ofthe body portion a distance to contact an opposing wall surface. Asupport member is coupled to the leg and is slidably adjustable withrespect to the mounting bracket.

Other features and aspects of the invention are also attained byproviding an electrical box assembly comprising an electrical boxincluding a rear wall, opposing side walls and opposing first and secondend walls. A first mounting bracket has a body portion coupled to thefirst end wall. A second mounting bracket has a body portion coupled tothe second end wall. Each of the mounting brackets has a leg extendingfrom the body portion with a length for contacting an opposing wallsurface, and a flange extending substantially perpendicular from thebody portion. Each mounting bracket is independently adjustable withrespect to the respective end wall. At least one support member iscoupled to the leg of the first mounting bracket or second mountingbracket. The support member is slidably adjustable with respect to themounting bracket to extend from the mounting bracket a distance tocontact an opposing wall to support the electrical box.

These and other advantages and salient features of the invention willbecome apparent from the following detailed description of the inventionwhich, taken in conjunction with the annexed drawings, disclose variousembodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The following is a brief description of the drawings, in which:

FIG. 1 is a perspective view of a two gang electrical box in oneembodiment of the invention;

FIG. 2 is a perspective view of a three gang electrical box according tothe invention;

FIG. 3 is a perspective view of the electrical box showing theelectrical boxes ganged together;

FIG. 4 is an exploded view of the electrical box of FIG. 2;

FIG. 5 is a perspective view of a first side of the electrical box ofFIG. 1 showing the mounting bracket attached to one side of theelectrical box;

FIG. 6 is an enlarged view of the connecting assembly of the mountingbracket;

FIG. 7 is a perspective view of a second side of the electrical boxshowing the mounting bracket and the support member;

FIG. 8 is a perspective view of the mounting bracket;

FIG. 9 is a side view of the mounting bracket of FIG. 8;

FIG. 10 is a front view of the mounting bracket of FIG. 8;

FIG. 11 is a perspective view of the support member;

FIG. 12 is a side view of the support member;

FIG. 13 is a front view of the support member;

FIG. 14 is a perspective view of the electrical box attached to asupport wall stud and a mounting bracket supporting one end of theelectrical box;

FIG. 15 is a side view of the assembly of FIG. 14;

FIG. 16 is a perspective view of the electrical box attached to a wallstud with the box adjusted flush with the wall surface;

FIG. 17 is a perspective view of the electrical box attached to a wallstud with the support member extending to the opposing wall; and

FIG. 18 is a side view of the assembly of FIG. 17.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is directed to an electrical box assembly and to amounting assembly for attaching and supporting the electrical boxassembly to a support. The present invention is particularly directed toan electrical box having a removable partition plate and an adjustablemounting bracket. The electrical box assembly is adapted for mounting toa support such as a wall stud where the open end of the electrical boxis positioned in a selected location with respect to the wall surface.

Referring to the drawings, the electrical box assembly 10 of theinvention includes an electrical box 12 and a mounting bracket 14. Theelectrical box 12 can be a two gang electrical box as shown in FIG. 1 ora three gang electrical box 16 as shown in FIG. 2. The electrical box 12and electrical box 16 can be ganged together as shown in FIG. 3.

Referring to FIG. 2, the electrical box 16 includes opposite side walls18 and removable end walls 20. The side walls 18 include a plurality ofknockouts 22 positioned to provide electrical connections to the box. Inthe embodiment shown in FIGS. 1 and 2, the knockouts can be concentriccircles 24 to provide an opening as large as four inches as needed. Theside wall 18 includes inwardly extending top flanges 26 for supportingan electrical wiring device. Each flange 26 includes a threaded aperture28 for receiving a mounting screw. As shown in FIG. 2, each flange 26 isspaced apart to form a slot 30 for receiving a partition plate 32. Eachtop flange 26 is also spaced from the end walls 20 to form a slot 34.

Referring to FIG. 4, each end of the side walls include a first tab 36extending in the plane of the side wall and a second tab 38 spaced fromthe respective side wall for coupling with the end wall. The end wallincludes a planar surface 40 with a flange 42 extending around the sideedges and the bottom edge. The side edges include a first tab 44 formating with the flange 38 and a second tab 46 for mating with the tab36. The bottom edge of the flange 42 has an inwardly spaced tab 48 formating with the rear wall 50 of the box 16. The rear wall 50 includes acorresponding offset tab 51 for overlapping and mating with the flange22 of the end wall 20 and the bottom wall 50 of a ganged electrical box.The end walls 20 and the top flange 26 are the same in the electricalbox 12 of FIG. 1 and the electrical box 16 of FIG. 2, so that the samecomponents are identified by the same reference numbers. The two gangelectrical box 12 and the three gang electrical box 16 differ only bythe length of the side walls 18 and the rear wall 50.

The partition plate 32 has a planar configuration with a dimension tofit within the opening of the electrical box between the opposing sidewalls 18. A coupling flange 52 extends perpendicular from a bottom edge54. A threaded screw 56 extends through an aperture in the flange 52 andis threaded into a hole in the rear wall 50 for attaching and fixing thelocation of the partition plate within the electrical box. As shown inFIG. 3, the partition plate is received within the slot 30 betweenadjacent top flanges 26. The partition plate has a height correspondingsubstantially to the height of the side walls so that the top edge ofthe partition plate is substantially flush with the top edge of the topflange 26. The top edge of the partition plate is stabilized within theslot 30 by the adjacent top flanges 26. As shown in FIG. 3, thepartition plate 32 also fits within the slot 34 formed between the twoadjacent ganged electrical boxes 12 and 16. The side edges 58 of thepartition plate 32 include a removable tab 60 which can be removed whenthe partition plate 32 is positioned in the slot 34 to avoidinterference with the screw 62 that is threaded through the couplingtabs 36 and 38 of the joined electrical boxes as shown in FIG. 3. Thebottom edge 54 includes a central recess 55 for receiving the couplingtab 51 of the rear wall 50.

Each electrical box is adapted for receiving a mounting bracket 70 asshown in FIGS. 5-7. In FIGS. 5-7, the electrical box 12 is shown as atwo gang box for purposes of illustration, although it will beunderstood that the mounting bracket 70 can also be attached to theelectrical box 16 as shown in FIGS. 14-18. The end walls 20 are adaptedfor receiving the mounting bracket 70. The mounting bracket 70 has amain body portion 72 that is coupled directly to the end wall 20. Themain body portion 72 has a pair of slots 74 extending in thelongitudinal direction of the mounting bracket for receiving arespective coupling screw 76. Screw 76 extends through the respectiveslot and is threaded into an aperture 78 in the end wall 20 foradjusting the position of the mounting bracket 70 with respect to theend wall in a linear direction between the bottom wall 50 and the opentop end of the electrical box. Two longitudinal extending strengtheningribs 80 are positioned parallel to the slots 74 for strengthening themain body portion and forming a contact surface of the bracket 70against the support structure.

A plurality of apertures or recesses 82 are provided for mating with adetent 84 in end wall 20 for positioning the mounting bracket 70 withrespect to the side wall. The top edge of the main body portion 72 hasan outwardly extending flange 86 having at least one aperture 88 forreceiving a fastener 90 for mounting the electrical box assembly to asupport such as a wall stud 92 as shown in FIG. 14.

The bottom edge 94 of the main body portion 72 includes an outwardlyextending flange 96 that extends outwardly a distance correspondingsubstantially to the depth of the ribs 80 as shown in FIG. 9. A leg 98extends downwardly from the flange 96 substantially parallel to the mainbody portion 72 and spaced outwardly from the main body portion 72 adistance corresponding substantially to the depth of the ribs 80 so thatthe outer surface of the ribs 80 and leg 98 lie in substantially thesame plane. The leg 98 has a substantially planar configuration with aninwardly extending flange 100 at an outer end of the leg 98. In oneembodiment, the length of the mounting bracket 70 between the top flange86 and the flange 100 corresponds substantially to the depth of astandard wall construction which is typically about 3.5 inches. Themounting bracket 70 has a length that can extend from the inner surfaceof the wall panel to the surface of the opposing wall panel as shown inFIG. 14 so that the bracket can support the free end of the electricalbox.

Leg 98 as shown in FIG. 5 has an inwardly extending detent 102 that canbe cut or embossed in the leg. The detent 102 has an axial lengthcorresponding substantially to the width of the flange 96 to contact thesurface of the end wall 20 of the electrical box when the mountingbracket 70 is attached to the end wall 20. The detent 102 contacts theside of the electrical box to prevent the leg 98 of the mounting bracket70 from deflecting inwardly toward the electrical box.

A removable support member 110 is coupled to the leg 98 by a screw 112.The screw 112 extends through a longitudinal slot 114 for adjusting theposition of the support member 110 with respect to the mounting bracket70. The screw 112 is received within an aperture 116 in the leg 98 asshown in FIG. 5. The leg 98 is preferably spaced from the plane of thebody portion 72 a distance so that the screw 112 does not interfere withthe end wall of the electrical box when the screw 112 is threaded intothe leg 98. Adjacent the aperture 116 is a pair of detents 118 thatextend outwardly for engaging the support member 110. As shown in FIG.7, the support member has a longitudinal body with a plurality of spacedapart apertures 120 for mating with the respective detents 118. Theapertures 120 are positioned along the length of the support member atselected locations to select the position of the support member withrespect to the mounting bracket 70 to accommodate the depth of the wallcavity as determined by the dimensions of the support structure such asthe wall stud. The support member 110 can include indicia 122 adjacentthe apertures 120 to indicate the length of the mounting bracket 70 withthe extended support member 110. Preferably, the end of support member110 has an inwardly extending tab 123 for contacting the wall surface asshown in FIGS. 15 and 18.

During use, the electrical box assembly 10 is assembled with anelectrical box 16 and a mounting bracket 70 as shown in FIG. 14. Themounting bracket 70 is adjusted on the end wall 20 by the adjustmentscrews 76 to position the open top end 124 of the electrical box aselected distance from the top flange 26. In the embodiment shown inFIG. 14, the mounting bracket 70 is positioned on the end wall 20 sothat the open top end 124 is spaced from the top flange 26 a distancecorresponding to the thickness of the wall panel 126. Alternatively, themounting bracket can be positioned with respect to the end wall so thatthe open top end is recessed from the outer surface of the wall panel126 or can extend outwardly from the wall panel as desired. The mountingbracket 70 is attached to the wall stud 92 by the screws 90 without theuse of the support member 110. The support member 110 can be providedwith the electrical box assembly and removed from the mounting bracket70 before mounting to the wall stud 92.

The opposing end wall forming the free end of the electrical box spacedfrom the wall stud also includes a mounting bracket 70. In theembodiment shown in FIG. 14, the mounting bracket 70 has a lengthcorresponding substantially to the dimension of the wall stud 92 so thatthe support member is not used and can be removed from the mountingbracket. The mounting bracket 70 is adjusted with respect to the endwall 20 by the adjustment screws 76 so that the top flange 26 contactsthe inner surface of the wall panel 126. The mounting bracket 70 asshown has a length to extend between the front wall panel 126 and theopposing back wall 128. The position of the mounting bracket and theelectrical box can be adjusted depending on the depth of the wall cavityand the thickness of the wall panel. As shown in FIG. 15, two layers ofthe wall panel 126 can be attached to the stud 92. The position of themounting bracket 70 with respect to the open top end 124 can be selectedso that the open top end remains flush with the outermost surface of thewall panel. In this embodiment, the support member 110 is attached tothe mounting bracket in the retracted position and extends to contactthe surface of the opposing wall 128 to support the end of theelectrical box and prevent deflection and movement of the electrical boxand prevent bending of the mounting bracket attached to the wall stud.

In another embodiment shown in FIGS. 17 and 18, the mounting bracket isable to accommodate a six inch wall stud 130. The mounting bracket 70 iscoupled to the end wall of the electrical box and attached directly tothe wall stud 130. The mounting bracket and support member on the freeend of the electrical box extend between the inner surfaces of the wallpanel to the opposing wall panel 128 to support the end of theelectrical box. As shown in FIGS. 17 and 18, the support member 110 isadjusted to extend from the mounting bracket 70 a selected distance tosupport the end of the electrical box opposite the wall stud 130.

While various embodiments have been chosen to illustrate the invention,it will be understood by those skilled in the art that various changesand modifications can be made without departing from the scope of theinvention as defined in the appended claims.

What is claimed is:
 1. An electrical box assembly comprising: anelectrical box having a rear wall, opposing first and second side walls,and end walls, each of said opposing side walls having an inwardlyextending flange configured for supporting an electrical device withinan open top of said electrical box; and a first mounting bracket coupledto said first side wall of said electrical box, said first mountingbracket having a top end with an outwardly extending flange configuredfor mounting to an outer face of a support structure and mounting saidelectrical box to the support structure, and a bottom end with a flangespaced from a bottom end of said electrical box and being configured forcontacting the surface of an opposing wall to support said electricalbox; and said first mounting bracket being adjustable with respect tothe open top end of said electrical box to adjust the position of theelectrical box with respect to the support structure.
 2. The electricalbox assembly of claim 1, wherein said electrical box has a partitionplate having a bottom edge with a tab for coupling said partition plateto said rear wall, and opposite side edges having removable tabs to forma recess with a dimension to receive a coupling screw extending inwardlyfrom said electrical box.
 3. The electrical box assembly of claim 1,wherein said first mounting bracket includes a longitudinally extendingslot configured for mating with a coupling screw for adjusting theposition of the mounting bracket with respect to said electrical box. 4.The electrical box assembly of claim 3, wherein said first wall has anoutwardly extending detent; and said first mounting bracket includes aplurality of spaced-apart apertures for mating with said detent toposition said first mounting bracket in a selected position with respectto said first wall and to position said flange of said first mountingbracket a selected distance from the open top end of the electrical box.5. The electrical box assembly of claim 1, further comprising a supportmember coupled to said first mounting bracket, said support member beingadjustable with respect to said first mounting bracket and configuredfor contacting the opposing wall to support said electrical box.
 6. Theelectrical box assembly of claim 5, wherein said support member has adistal end with an inwardly extending flange configured for contacting awall surface to support said electrical box.
 7. The electrical boxassembly of claim 6, wherein said first mounting bracket includes a bodyportion coupled to said first wall, a flange extending outward from abottom end of said body portion, and a longitudinally extending legextending from said flange and being spaced from a plane of said bodyportion and spaced from said first wall.
 8. The electrical box assemblyof claim 7, wherein said leg includes a detent to contact said firstwall and space said leg from said first wall of said electrical box. 9.The electrical box assembly of claim 8, wherein said leg of said firstmounting bracket has a screw received in a threaded hole in said leg;said leg of said support member includes a longitudinal slot configuredfor receiving said screw and extending through said leg for adjustingthe position of said support member with respect to said leg of saidfirst mounting bracket, and where said leg of said mounting bracket isspaced from said first wall a distance to prevent interference of saidscrew with said first wall.
 10. The electrical box assembly of claim 1,further comprising; a second mounting bracket having a body portion withan elongated slot receiving a screw threaded into said second side wallfor adjustably coupling said second mounting bracket to said second sidewall and positioning said second mounting bracket a selected distancefrom said open top of said electrical box; said second mounting brackethaving a top end with an outwardly extending flange with a dimension forcontacting an inner face of a wall panel, and a bottom end with a flangespaced from said electrical box for contacting the surface of theopposing wall and spaced a first distance from said electrical box, anda support member having a longitudinal slot receiving a screw receivedin a threaded hole in said second mounting bracket for sliding saidsupport member on said second mounting bracket, said support memberhaving a plurality of apertures oriented in a longitudinal direction ofsaid support member for mating with a detent on said second mountingbracket to position an end of said support member a selected distancefrom said electrical box.
 11. An electrical box assembly comprising: anelectrical box having a rear wall, a first wall and a second opposingwall, and an open end, said first and second opposing walls having aflange configured for supporting an electrical device in the open end ofsaid electrical box; a first mounting bracket having a body portioncoupled to said electrical box and being adjustable relative to the opentop of said electrical box, said mounting bracket having a flangeextending outward from a top end of said body portion and configured forcoupling to a support structure to support said electrical box andposition said electrical with respect to a first wall, said firstmounting bracket having a flange extending from a bottom end, and saidfirst mounting bracket having a length to contact a second opposing wallspaced a first distance from said first wall; and a support membercoupled to said mounting bracket and being slidably adjustable withrespect to said first mounting bracket to contact a third wall spaced asecond distance from said first wall.
 12. The electrical box assembly ofclaim 11, wherein said first mounting bracket has a leg extendingsubstantially parallel to said body portion and spaced outwardly from aplane of said body portion by a flange, and said body portion of saidfirst mounting bracket is coupled to said first wall and said leg isspaced outwardly from said first wall.
 13. The electrical box assemblyof claim 12, wherein said support member is coupled to said leg by afastener and where said leg is spaced from said first wall a distance toprevent interference of said fastener with said first wall.
 14. Theelectrical box assembly of claim 13, wherein one of said support membersor said leg further comprises at least one detent, and the other of saidsupport member and leg has at least one aperture for receiving saiddetent to position said support member in a selected position withrespect to said leg; and said support member includes a longitudinallyextending slot receiving a coupling screw received in a threadedaperture in said leg for adjusting the position of said support memberwith respect to said first mounting bracket.
 15. The electrical boxassembly of claim 12, wherein said leg of said first mounting bracketincludes a detent contacting said first wall to space said leg outwardlyfrom said first wall.
 16. An electrical box assembly comprising: anelectrical box including a rear wall, a first wall and an opposingsecond wall, and an open top end; a first mounting bracket having a bodyportion coupled to said first wall, a second mounting bracket having abody portion coupled to said second wall, each said mounting bracketshaving a flange extending outwardly from a top end of said body portionand a leg extending from said body portion with a length for contactingan opposing wall surface, said flange of said first mounting bracketconfigured for coupling to an outer face of a support structure forsupporting a first wall, said flange of said second mounting bracketconfigured for contacting an inner surface of and supporting the firstwall, each mounting bracket being independently adjustable with respectto said respective first wall and second wall; and a support membercoupled to said leg of said second mounting bracket, said support memberbeing slidably adjustable with respect to said second mounting bracketto extend from said second mounting bracket a distance to contact anopposing wall to support said electrical box.
 17. The electrical boxassembly of claim 16, wherein said body portion of said second mountingbracket includes a longitudinal slot receiving a screw threaded into anaperture in said second wall, and a plurality of spaced apart aperturesfor receiving and mating with a detent extending from the respectivesecond wall, to locate the second mounting member in a selected positionwith respect to said electrical box.
 18. The electrical box assembly ofclaim 17, wherein said leg of said second mounting bracket has at leastone outwardly extending detent and said support member has a pluralityof spaced apart recesses for receiving said at least one detent.
 19. Theelectrical box assembly of claim 16, wherein said leg of said secondmounting bracket is connected to said body portion by a flange to spacesaid leg from said second wall of said electrical box, said leg of saidsecond mounting bracket having an inwardly extending detent to contactsaid second wall, and an inwardly extending flange at a bottom end ofsaid leg for contacting the opposing wall.
 20. The electrical boxassembly of claim 19, wherein said leg of said second mounting brackethas an outwardly extending detent and screw hole receiving a screw, andsaid support member has a longitudinal slot receiving said screw foradjusting the position of said leg with respect to said second mountingbracket, and said support member having a plurality of spaced apartapertures for mating with said detent to orient said support member in apredetermined position with respect to said leg.